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PT: Exhaust Vincent engine in a Slimline Featherbed Frame


Chris Launders

Well Known and Active Website User
VOC Member
Yes that's a wideline, the slimline has a rounded subframe not purely triangular and the main tubes slope in above the swinging arm gusset plates, a Vincent motor will go in ok but you have less room for things like a central oil tank. It's only that area that is much different.
This is a slimline
1584805827779.png
 

Robert Watson

Well Known and Active Website User
VOC Member
See Cyborg - you started out complaining about all the "fettling" of a standard (ish) Vincent, and now, way too deep into a special you are stating to realize how simple a vincent really is! :)
 

Bill Thomas

Well Known and Active Website User
VOC Member
That's a good looker Chris, Who owns that ?.
Not that I could ride it with my Old Back !.
 

Cyborg

Well Known and Active Website User
VOC Member
See Cyborg - you started out complaining about all the "fettling" of a standard (ish) Vincent, and now, way too deep into a special you are stating to realize how simple a vincent really is! :)
It was the decades of working on Japanese stuff. Had forgotten the word fettling even existed. I think where I went wrong with the Comet was first.... you offering to sell me a big end bearing for $100 and secondly, my other self imposed rule to use the crap in the shed. CBX 550 wheels, GL500 frame, Ducati rear shock rocker, Norton box, modified BMW swingarm, Yamaha rear shock, etc. I’ll spare everyone the nauseating story on the seat upholstery.... trying to drum up the courage for version 5.0
BTW, I think the B is close to standard except for shift linkage and Alton. Found out the other day I have the correct fuel pipe! No doubt there are other sins, but prefer to remain ignorant about them.
 

Shane998

Active Website User
VOC Member
Cyborg wins the cheese burger. Thats my wide line Norvin. Yes, a Vincent engine will go into a slime line. I have worked on a few.
Hello Ken and All. When I saw the question did a twin fit in a slimline I thought they did because thought Garry Nemeceks Norvin was a slimline I found some photos of a club event with Garrys Norvin in them Seems I have clicked the next image in the film roll to the one I intended My apologies for my mistake and confusion So here is the pic I meant to send Now I really really hope this is a slimline I now also see in this pic a Vincati and I think a V Rod both also being talked about on this forum Seems I have fluked a trifecta Now I will nervously try to attach correct file2ABA5071-1CD3-48DE-A48C-A91A8DBF49E2.png
 
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Chris Launders

Well Known and Active Website User
VOC Member
Yes that's a Slimline, I'm tempted to change my Norvin from "cafe racer" styling to more standard Norton, I've been using my Atlas for months and when I went out on the Vincent a couple of weeks ago was disappointed with how bad it felt comfort/weight, handling wise even with all the mods I've done.
 

Glenliman

Well Known and Active Website User
VOC Member
If you can sort the Atlas vibes somehow, a Norton twin in Norton Featherbed is nice.
There are scads of other engines that have been transplanted into those frames. I wonder if any of them are as good as a light, quick little 650ss? ( World's fastest production motorcycle 1963)

I might be biased!

Glen
 
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Chris Launders

Well Known and Active Website User
VOC Member
Well mine's not strictly an Atlas, It's a1960 Dominator 99, with altered crankcases, balanced 750 Commando crank, rods and top end with a single 32mm mk1 concentric, belt primary/Commando clutch and back wheel, 2ls front, not a road burner but masses of torque, brilliant back lanes machine. The Commando engine mods came about as the 600 barrel broke in the late 80s and I couldn't afford a new one or find a good 2nd hand good one, 750 Commando stuff was cheap and easy to get at the jumbles, then fitted the 2ls front brake obviously, eventually wore out the Dommi clutch completely so fitted the belt drive and Commando back wheel as an update. Been using it 35 years now.
 
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Chris Launders

Well Known and Active Website User
VOC Member
Can do Eric but it just looks like any other 1960 Norton, other than the Commando oil feeds to the head it's no different than any Dommi/Atlas.
 

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